Q.

Assertion A: The first ionisation enthalpy decreases across a period.
Reason R: The increasing nuclear charge outweighs the shielding across the period.

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a

A is false but R is true

b

A is true but R is false

c

Both A and R are true and R is the correct explanation of A

d

Both A and R are true but R is NOT the correct explanation of A

answer is A.

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Detailed Solution

In a period, IE increases

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